/* BODY FIX (BACKGROUND + CENTER SYSTEM) */
        body {
          font-family: Arial, sans-serif;
          background: url('https://cdn.deepseek.com/blog/banner-background.webp') no-repeat center center fixed;
          background-size: cover;
        
          margin: 0;
          padding: 0;
        }
        
        /* WRAPPER (FIXED) */
        .authentication-wrapper {
          display: flex;
          width: 100%;
        
          min-height: auto;
        
          justify-content: center;
          align-items: flex-start;
        
          padding-top: 60px;
          padding-bottom: 60px; /* 🔥 yahi change */
        }
        
        /* INNER BOX */
        .authentication-wrapper .authentication-inner {
          width: 100%;
          max-width: 650px;
          position: relative;
        }
        
        /* CARD (FORM BOX) */
        .authentication-wrapper .card {
          min-height: auto; /* 🔥 FIX: height flexible */
          border-radius: 12px;
          padding: 25px;
          box-shadow: 0 10px 30px rgba(0,0,0,0.2);
        
          background: rgba(255,255,255,0.95);
        }
        
        /* BRAND */
        .authentication-wrapper .app-brand {
          margin-bottom: 2rem;
          text-align: center;
        }
        
        /* INPUT */
        .form-control {
          height: 45px;
          border-radius: 8px;
        }
        
        /* BUTTON */
        .btn-primary {
          height: 45px;
          border-radius: 8px;
          font-weight: 600;
        }
        
        /* CHECKBOX */
        .form-check-label {
          cursor: pointer;
        }
        
        /* FOOTER FIX */
        .footer {
          width: 100%;
          padding: 15px;
          text-align: center;
          background: rgba(0,0,0,0.7);
          color: white;
        }
        
        /* RESPONSIVE */
        @media (max-width: 768px) {
          .authentication-wrapper .authentication-inner {
            max-width: 95%;
          }
        
          .authentication-wrapper {
            padding-top: 60px;
            padding-bottom: 60px;
          }
        }
            /* Modern Login Form CSS */
        :root {
            --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            --primary-color: #667eea;
            --primary-dark: #5a67d8;
            --secondary-color: #764ba2;
            --text-dark: #2d3748;
            --text-light: #718096;
            --bg-light: #f7fafc;
            --card-bg: rgba(255, 255, 255, 0.95);
            --shadow-sm: 0 10px 25px -5px rgba(0, 0, 0, 0.1);
            --shadow-md: 0 20px 40px -12px rgba(0, 0, 0, 0.15);
            --shadow-lg: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
            --border-radius: 24px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        
        /* Container Styling */
        .container-xxl {
            min-height: 100vh;
            position: relative;
            overflow: hidden;
        }
        
        /* Animated Background Effect */
        .container-xxl::before {
            content: '';
            position: absolute;
            width: 200%;
            height: 200%;
            top: -50%;
            left: -50%;
            background: radial-gradient(circle, rgba(255,255,255,0.1) 1px, transparent 1px);
            background-size: 40px 40px;
            animation: bgMove 20s linear infinite;
        }
        
        @keyframes bgMove {
            0% {
                transform: translate(0, 0);
            }
            100% {
                transform: translate(40px, 40px);
            }
        }
        
        /* Authentication Wrapper */
        .authentication-wrapper {
            position: relative;
            z-index: 1;
            padding: 2rem;
        }
        
        .authentication-inner {
            max-width: 480px;
            margin: 0 auto;
        }
        
        /* Card Styling */
        .card {
            background: var(--card-bg);
            backdrop-filter: blur(10px);
            border-radius: var(--border-radius);
            box-shadow: var(--shadow-lg);
            border: 1px solid rgba(255, 255, 255, 0.2);
            transition: var(--transition);
            animation: slideUp 0.6s ease-out;
        }
        
        @keyframes slideUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        .card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
        }
        
        .card-body {
            padding: 2.5rem;
        }
        
        /* Brand Section */
        .brand-section {
            text-align: center;
            margin-bottom: 2.5rem;
        }
        
        .logo-wrapper {
            width: 80px;
            height: 80px;
            background: var(--primary-gradient);
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
            box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
            animation: pulse 2s infinite;
        }
        
        @keyframes pulse {
            0%, 100% {
                transform: scale(1);
            }
            50% {
                transform: scale(1.05);
            }
        }
        
        .logo-wrapper i {
            font-size: 2.5rem;
            color: white;
        }
        
        .brand-title {
            font-size: 1.8rem;
            font-weight: 700;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
        }
        
        .brand-subtitle {
            font-size: 0.875rem;
            color: var(--text-light);
            margin-top: 0.5rem;
        }
        
        /* Form Elements */
        .form-label {
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 0.5rem;
            font-size: 0.875rem;
            letter-spacing: 0.3px;
        }
        
        .form-control {
            border: 2px solid #e2e8f0;
            border-radius: 12px;
            padding: 0.75rem 1rem;
            font-size: 0.95rem;
            transition: var(--transition);
            background: white;
        }
        
        .form-control:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
            outline: none;
        }
        
        /* Input Group */
        .input-group {
            position: relative;
        }
        
        .input-group .form-control {
            border-right: none;
            border-top-right-radius: 0;
            border-bottom-right-radius: 0;
        }
        
        .input-group-text {
            background: white;
            border: 2px solid #e2e8f0;
            border-left: none;
            border-radius: 12px;
            border-top-left-radius: 0;
            border-bottom-left-radius: 0;
            cursor: pointer;
            transition: var(--transition);
        }
        
        .input-group-text:hover {
            background: #f7fafc;
            color: var(--primary-color);
        }
        
        /* Forgot Link */
        .forgot-link {
            margin-left: auto;
            font-size: 0.875rem;
            color: var(--primary-color);
            text-decoration: none;
            transition: var(--transition);
        }
        
        .forgot-link:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }
        
        /* Checkbox Styling */
        .form-check {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        
        .form-check-input {
            width: 1.1rem;
            height: 1.1rem;
            border-radius: 4px;
            border: 2px solid #e2e8f0;
            cursor: pointer;
            transition: var(--transition);
        }
        
        .form-check-input:checked {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
        }
        
        .form-check-label {
            font-size: 0.875rem;
            color: var(--text-light);
            cursor: pointer;
        }
        
        /* Button Styling */
        .btn-primary {
            width: 100%;
            background: var(--primary-gradient);
            color: white;
            border: none;
            padding: 0.875rem;
            border-radius: 12px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        
        .btn-primary::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 0;
            height: 0;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.3);
            transform: translate(-50%, -50%);
            transition: width 0.6s, height 0.6s;
        }
        
        .btn-primary:hover::before {
            width: 300px;
            height: 300px;
        }
        
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
        }
        
        .btn-primary i {
            margin-left: 0.5rem;
            transition: transform 0.3s ease;
        }
        
        .btn-primary:hover i {
            transform: translateX(5px);
        }
        
        /* Responsive Design */
        @media (max-width: 768px) {
            .authentication-wrapper {
                padding: 1rem;
            }
            
            .card-body {
                padding: 1.5rem;
            }
            
            .brand-title {
                font-size: 1.5rem;
            }
            
            .logo-wrapper {
                width: 60px;
                height: 60px;
            }
            
            .logo-wrapper i {
                font-size: 1.8rem;
            }
        }
        
        /* Loading State Animation */
        .btn-primary.loading {
            pointer-events: none;
            opacity: 0.7;
        }
        
        .btn-primary.loading i {
            animation: spin 1s linear infinite;
        }
        
        @keyframes spin {
            from {
                transform: rotate(0deg);
            }
            to {
                transform: rotate(360deg);
            }
        }
        
        /* Focus Visible for Accessibility */
        .form-control:focus-visible,
        .btn-primary:focus-visible,
        .input-group-text:focus-visible {
            outline: 2px solid var(--primary-color);
            outline-offset: 2px;
        }
        
        /* Smooth Transitions */
        * {
            transition: var(--transition);
        }
        
        /* Custom Scrollbar */
        ::-webkit-scrollbar {
            width: 8px;
        }
        
        ::-webkit-scrollbar-track {
            background: #f1f1f1;
        }
        
        ::-webkit-scrollbar-thumb {
            background: var(--primary-color);
            border-radius: 4px;
        }
        
        ::-webkit-scrollbar-thumb:hover {
            background: var(--primary-dark);
        }